#include <stdarg.h>
+#include <errno.h>
+#include <ngadmin.h> /* FIXME */
#include <nsdp/attr.h>
#include <nsdp/protocol.h>
-
struct attr* newAttr (unsigned short attr, unsigned short size, void *data)
{
struct attr *at;
-
at = malloc(sizeof(struct attr));
if (at == NULL)
return NULL;
at->size = size;
at->data = data;
-
return at;
}
bool keep;
- ln = attr->first;
- while (ln != NULL) {
+ for (ln = attr->first; ln != NULL; ) {
at = ln->data;
va_start(ap, attr);
destroyElement(attr, pr, (void(*)(void*))freeAttr);
}
}
+}
+
+
+static int ports_status_endecode (struct attr *at)
+{
+ struct attr_port_status *ps = at->data;
+
+ if (at->size != sizeof(struct attr_port_status))
+ return -EMSGSIZE;
+
+ if (ps->port < 1)
+ return -EINVAL;
+
+ switch (ps->status) {
+
+ case SPEED_DOWN:
+ case SPEED_10:
+ case SPEED_100:
+ case SPEED_1000:
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+
+static int port_stat_endecode (struct attr *at, bool encode)
+{
+ struct attr_port_stat *ps = at->data;
+ unsigned long long *v;
+
+ if (at->size != sizeof(struct attr_port_stat))
+ return -EMSGSIZE;
+
+ if (ps->port < 1)
+ return -EINVAL;
+
+ for (v = &ps->recv; ((void*)v) - ((void*)ps) < (int)sizeof(struct attr_port_stat); v++)
+ *v = encode ? htobe64(*v) : be64toh(*v);
+
+ return 0;
+}
+
+
+static int qos_endecode (struct attr *at)
+{
+ struct attr_qos *aq = at->data;
+
+ if (at->size != sizeof(struct attr_qos))
+ return -EMSGSIZE;
+
+ if (aq->port < 1)
+ return -EINVAL;
+
+ if (aq->prio < PRIO_HIGH || aq->prio > PRIO_LOW)
+ return -EINVAL;
+
+ return 0;
+}
+
+
+static int bitrate_endecode (struct attr *at, bool encode)
+{
+ struct attr_bitrate *sb = at->data;
+
+ if (at->size != sizeof(struct attr_bitrate))
+ return -EMSGSIZE;
+
+ if (sb->port < 1)
+ return -EINVAL;
+
+ if (!encode)
+ sb->bitrate = ntohl(sb->bitrate);
+
+ if (sb->bitrate < BITRATE_UNSPEC || sb->bitrate > BITRATE_512M)
+ return -EINVAL;
+
+ if (encode)
+ sb->bitrate = htonl(sb->bitrate);
+
+ return 0;
+}
+
+
+static int pvid_endecode (struct attr *at, bool encode)
+{
+ struct attr_pvid *ap = at->data;
+
+ if (at->size != sizeof(struct attr_pvid))
+ return -EMSGSIZE;
+
+ if (ap->port < 1)
+ return -EINVAL;
+
+ if (!encode)
+ ap->vlan = ntohs(ap->vlan);
+
+ if (ap->vlan < VLAN_MIN || ap->vlan > VLAN_DOT_MAX)
+ return -EINVAL;
+
+ if (encode)
+ ap->vlan = htons(ap->vlan);
+
+ return 0;
+}
+
+
+static int cabletest_do_endecode (struct attr *at)
+{
+ struct attr_cabletest_do *acd = at->data;
+
+ if (at->size != sizeof(struct attr_cabletest_do))
+ return -EMSGSIZE;
+
+ if (acd->port < 1 || acd->action != 1)
+ return -EINVAL;
+
+ return 0;
+}
+
+
+static int cabletest_result_endecode (struct attr *at, bool encode)
+{
+ struct attr_cabletest_result *acr = at->data;
+
+ /* Note: this attribute is special
+ * - when sent by the client, it contains the port number whe want to
+ * get cabletest results from
+ * - when the switch replies, it contains the actual test results data
+ */
+
+ /* no need to check the size, the only possible value under 1
+ * is 0 and in that case the decoder is not called
+ */
+ if (acr->port < 1)
+ return -EINVAL;
+
+ if (at->size == 1)
+ return 0;
+
+ if (at->size != sizeof(struct attr_cabletest_result))
+ return -EMSGSIZE;
+
+ if (encode) {
+ acr->v1 = htonl(acr->v1);
+ acr->v2 = htonl(acr->v2);
+ } else {
+ acr->v1 = ntohl(acr->v1);
+ acr->v2 = ntohl(acr->v2);
+ }
+
+ return 0;
+}
+
+
+static int igmp_vlan_endecode (struct attr *at, bool encode)
+{
+ struct attr_igmp_vlan *aiv = at->data;
+
+ if (at->size != sizeof(struct attr_igmp_vlan))
+ return -EMSGSIZE;
+
+ if (!encode) {
+ aiv->enable = ntohs(aiv->enable);
+ aiv->vlan = ntohs(aiv->vlan);
+ }
+
+ aiv->enable = (aiv->enable != 0);
+ if (aiv->vlan < VLAN_MIN || aiv->vlan > VLAN_DOT_MAX)
+ return -EINVAL;
+
+ if (encode) {
+ aiv->enable = htons(aiv->enable);
+ aiv->vlan = htons(aiv->vlan);
+ }
+
+ return 0;
+}
+
+
+static int mirror_encode (struct attr *at)
+{
+ struct attr_mirror *am = at->data;
+ unsigned char p, ports, *r;
+ unsigned int sz;
+
+
+ /* no need to check attribute size, since
+ * sizeof(struct attr_mirror) == 1 and encoder is not
+ * called when attribute size is zero (ie empty attribute)
+ *
+ * am->outport encodes the outgoing mirror port and the array
+ * the ports from which the data is copied, it must not be empty
+ *
+ * am->outport == 0 is allowed and means mirroring is disabled
+ * but in that case the ports array must be empty
+ */
+ ports = at->size - sizeof(struct attr_mirror);
+ if ((am->outport == 0) ^ (ports == 0))
+ return -EINVAL;
+
+ sz = 3 + ((ports - 1) >> 3);
+ r = malloc(sz);
+ if (r == NULL)
+ return -ENOMEM;
+ memset(r, 0, sz);
+
+ r[0] = am->outport;
+
+ /* FIXME: if ports > 8 */
+ for (p = 1; p <= ports; p++) {
+ if (am->outport != p)
+ r[2] |= (am->ports[p] & 1) << (8 - p);
+ }
+
+ free(at->data);
+ at->data = r;
+ at->size = sz;
+
+
+ return 0;
+}
+
+
+static int mirror_decode (struct attr *at)
+{
+ struct attr_mirror *am;
+ unsigned char p, ports, *r = at->data;
+ unsigned int sz;
+
+
+ if (at->size < 3)
+ return -EMSGSIZE;
+
+ /* note: we cannot compute the exact amount of ports from here,
+ * instead we have the immediate superior multiple of 8
+ * it will be the user's job to ignore extra entries
+ */
+ ports = ((at->size - 2) << 3);
+
+ /* r[0] == 0 is allowed and means mirroring is disabled */
+ if (r[0] == 0)
+ ports = 0;
+ sz = sizeof(struct attr_mirror) + ports;
+
+ am = malloc(sz);
+ if (am == NULL)
+ return -ENOMEM;
+ memset(am, 0, sz);
+
+ am->outport = r[0];
+
+ /* FIXME: if ports > 8 */
+ for (p = 1; p <= ports; p++)
+ am->ports[p] = (r[2] >> (8 - p)) & 1;
+
+ free(at->data);
+ at->data = am;
+ at->size = sz;
+
+
+ return 0;
+}
+
+
+static int vlan_port_encode (struct attr *at)
+{
+ struct attr_vlan_conf *avc = at->data;
+ unsigned char p, ports, *r;
+ unsigned int sz;
+
+
+ /* just a header is valid */
+ if (at->size < sizeof(struct attr_vlan_conf))
+ return -EMSGSIZE;
+ ports = at->size - sizeof(struct attr_vlan_conf);
+
+ if (avc->vlan < VLAN_MIN || avc->vlan > VLAN_PORT_MAX)
+ return -EINVAL;
+ if (ports == 0)
+ sz = 2;
+ else
+ sz = (2 + 1 + ((ports - 1) >> 3));
+
+ r = malloc(sz);
+ if (r == NULL)
+ return -ENOMEM;
+
+ memset(r, 0, sz);
+ *(unsigned short*)r = htons(avc->vlan);
+
+ /* FIXME: if ports > 8 */
+ for (p = 0; p < ports; p++) {
+ if (avc->ports[p] == VLAN_UNTAGGED)
+ r[2] |= (1 << (7 - p));
+ }
+
+ free(at->data);
+ at->data = r;
+ at->size = sz;
+
+
+ return 0;
+}
+
+
+static int vlan_port_decode (struct attr *at)
+{
+ unsigned char p, ports, *r = at->data;
+ struct attr_vlan_conf *avc;
+ unsigned int sz;
+
+
+ if (at->size < 2)
+ return -EMSGSIZE;
+
+ /* note: we cannot compute the exact amount of ports from here,
+ * instead we have the immediate superior multiple of 8
+ * it will be the user's job to ignore extra entries
+ */
+ ports = ((at->size - 2) << 3);
+
+ sz = sizeof(struct attr_vlan_conf) + ports;
+ avc = malloc(sz);
+ if (avc == NULL)
+ return -ENOMEM;
+
+ avc->vlan = ntohs(*(unsigned short*)r);
+
+ /* FIXME: if ports > 8 */
+ for (p = 0; p < ports; p++) {
+ if ((r[2] >> (7 - p)) & 1)
+ avc->ports[p] = VLAN_UNTAGGED;
+ else
+ avc->ports[p] = VLAN_NO;
+ }
+
+ free(at->data);
+ at->data = avc;
+ at->size = sz;
+
+
+ return 0;
+}
+
+
+static int vlan_dot_encode (struct attr *at)
+{
+ struct attr_vlan_conf *avc = at->data;
+ unsigned char p, ports, *r, fl;
+ unsigned int sz;
+
+
+ /* just a header is valid */
+ if (at->size < sizeof(struct attr_vlan_conf))
+ return -EMSGSIZE;
+ ports = at->size - sizeof(struct attr_vlan_conf);
+
+ if (avc->vlan < VLAN_MIN || avc->vlan > VLAN_DOT_MAX)
+ return -EINVAL;
+
+ if (ports == 0)
+ sz = 2;
+ else
+ sz = 2 + 2 * (1 + ((ports - 1) >> 3));
+
+ r = malloc(sz);
+ if (r == NULL)
+ return -EMSGSIZE;
+
+ memset(r, 0, sz);
+ *(unsigned short*)r = htons(avc->vlan);
+
+ /* FIXME: if ports > 8 */
+ for (p = 0; p < ports; p++) {
+ fl = (1 << (7 - p));
+ switch (avc->ports[p]) {
+ case VLAN_TAGGED:
+ r[3] |= fl;
+ /* a tagged VLAN is also marked as untagged
+ * so do not put a "break" here
+ */
+ case VLAN_UNTAGGED:
+ r[2] |= fl;
+ }
+ }
+
+
+ free(at->data);
+ at->data = r;
+ at->size = sz;
+
+
+ return 0;
+}
+
+
+static int vlan_dot_decode (struct attr *at)
+{
+ unsigned char p, ports, *r = at->data;
+ struct attr_vlan_conf *avc;
+ unsigned int sz;
+
+
+ /* attribute size must be a multiple of 2 because there are
+ * 2 bytes (1 for tagged and 1 for untagged) per block of
+ * 8 ports, plus the 2 first bytes for the VLAN id
+ */
+ if (at->size < 2 || (at->size & 1) != 0)
+ return -EMSGSIZE;
+
+ /* note: we cannot compute the exact amount of ports from here,
+ * instead we have the immediate superior multiple of 8
+ * it will be the user's job to ignore extra entries
+ */
+ ports = ((at->size - 2) / 2) << 3;
+
+ sz = sizeof(struct attr_vlan_conf) + ports;
+ avc = malloc(sz);
+ if (avc == NULL)
+ return -ENOMEM;
+
+ avc->vlan = ntohs(*(unsigned short*)r);
+
+ /* FIXME: if ports > 8 */
+ for (p = 0; p < ports; p++) {
+ if ((r[3] >> (7 - p)) & 1)
+ avc->ports[p] = VLAN_TAGGED;
+ else if ((r[2] >> (7 - p)) & 1)
+ avc->ports[p] = VLAN_UNTAGGED;
+ else
+ avc->ports[p] = VLAN_NO;
+ }
+
+ free(at->data);
+ at->data = avc;
+ at->size = sz;
+
+
+ return 0;
+}
+
+
+static int processAttr (struct attr *at, bool encode)
+{
+ unsigned char *byte = at->data;
+ unsigned short *word = at->data;
+ unsigned int *dword = at->data;
+
+
+ /* empty attributes are not processed */
+ if (at->size == 0)
+ return 0;
+
+ if (at->data == NULL)
+ return -EFAULT;
+
+ switch (at->attr) {
+
+ case ATTR_MAC:
+ if (at->size != ETH_ALEN)
+ return -EMSGSIZE;
+ return 0;
+
+ case ATTR_IP:
+ case ATTR_NETMASK:
+ case ATTR_GATEWAY:
+ /* IP addresses are kept in network byte order even on the host */
+ if (at->size != sizeof(struct in_addr))
+ return -EMSGSIZE;
+
+ return 0;
+
+ case ATTR_PORTS_COUNT:
+ if (at->size != 1)
+ return -EMSGSIZE;
+
+ return 0;
+
+ case ATTR_RESTART:
+ case ATTR_DEFAULTS:
+ case ATTR_STATS_RESET:
+ case ATTR_STORM_ENABLE:
+ case ATTR_IGMP_BLOCK_UNK:
+ case ATTR_IGMP_VALID_V3:
+ if (at->size != 1)
+ return -EMSGSIZE;
+
+ *byte = (*byte != 0);
+
+ return 0;
+
+ case ATTR_DHCP:
+ /* Note: DHCP attribute is special, it is 2 two bytes long
+ * when sent by the switch but only 1 byte long when sent
+ * by the client
+ */
+ if (at->size == 1) {
+ *byte = (*byte != 0);
+ return 0;
+ } else if (at->size > 2) {
+ return -EMSGSIZE;
+ }
+
+ if (!encode)
+ *word = ntohs(*word);
+
+ *word = (*word != 0);
+
+ if (encode)
+ *word = htons(*word);
+
+ return 0;
+
+ case ATTR_ENCPASS:
+ if (at->size != 4)
+ return -EMSGSIZE;
+
+ if (!encode)
+ *dword = ntohl(*dword);
+
+ *dword = (*dword != 0);
+
+ if (encode)
+ *dword = htonl(*dword);
+
+ return 0;
+
+ case ATTR_VLAN_TYPE:
+ if (at->size != 1)
+ return -EMSGSIZE;
+
+ /* no need to check if *byte < VLAN_DISABLED because
+ * byte is unsigned and VLAN_DISABLED is 0 */
+ if (*byte > VLAN_DOT_ADV)
+ return -EINVAL;
+
+ return 0;
+
+ case ATTR_QOS_TYPE:
+ if (at->size != 1)
+ return -EMSGSIZE;
+
+ if (*byte < QOS_PORT || *byte > QOS_DOT)
+ return -EINVAL;
+
+ return 0;
+
+ case ATTR_QOS_CONFIG:
+ return qos_endecode(at);
+
+ case ATTR_VLAN_DESTROY:
+ if (at->size != 2)
+ return -EMSGSIZE;
+
+ if (!encode)
+ *word = ntohs(*word);
+
+ if (*word < VLAN_MIN || *word > VLAN_DOT_MAX)
+ return -EINVAL;
+
+ if (encode)
+ *word = htons(*word);
+
+ return 0;
+
+ case ATTR_PORT_STATUS:
+ return ports_status_endecode(at);
+
+ case ATTR_PORT_STATISTICS:
+ return port_stat_endecode(at, encode);
+
+ case ATTR_BITRATE_INPUT:
+ case ATTR_BITRATE_OUTPUT:
+ case ATTR_STORM_BITRATE:
+ return bitrate_endecode(at, encode);
+
+ case ATTR_VLAN_PVID:
+ return pvid_endecode(at, encode);
+
+ case ATTR_CABLETEST_DO:
+ return cabletest_do_endecode(at);
+
+ case ATTR_CABLETEST_RESULT:
+ return cabletest_result_endecode(at, encode);
+
+ case ATTR_IGMP_ENABLE_VLAN:
+ return igmp_vlan_endecode(at, encode);
+
+ case ATTR_MIRROR:
+ if (encode)
+ return mirror_encode(at);
+ else
+ return mirror_decode(at);
+
+ case ATTR_VLAN_PORT_CONF:
+ if (encode)
+ return vlan_port_encode(at);
+ else
+ return vlan_port_decode(at);
+
+ case ATTR_VLAN_DOT_CONF:
+ if (encode)
+ return vlan_dot_encode(at);
+ else
+ return vlan_dot_decode(at);
+
+ /* undefined attributes are not modified */
+ default:
+ return 0;
+ }
+}
+
+
+int encodeAttr (struct attr *at)
+{
+ return processAttr(at, true);
+}
+
+
+int decodeAttr (struct attr *at)
+{
+ return processAttr(at, false);
}
projects / ngadmin / blobdiff